Right to enter house after tenant's lease ends

[Michelle D.]

It looks like I will be taking my former tenant to small claims court. At this point he owes about $1500 in rent, possibly another $1000 for the cleaning charges after he clogged the toilet, plus any other heavy duty cleaning that's necessary after he vacates the property.

He has refused to schedule a date to drop off the house keys but has said several times he will be out by 10/28. He has taken the electricity out of his name. Do I have the right to go in the house unannounced after that date and get the locks changed? Am I responsible for storing any items he leaves behind?

We served him with a 30 day notice to quit last month.

I live in MA - any other suggestions or tips would be greatly appreciated!